Alfred d lanoy



(No Model.)

A. DLANOY.

VALVE.

Patented Aug. 28, 1888.

J1 Maxi tries.

UNITED STAT S ALFRED DLANOY, OF NEXV YORK, N. Y., ASSIGXOR OF ONE-HALFTO J AWES K. FROTHINGHAM AND HERMAN \V. WINANS, OF SAME PLACE.

VALVE.

SPECIFICATION forming part of Letters Patent No. 388,766, dated August28, 1888, Application filed June 21, ISES. Serial No. 271,824. (Nomodel.)

To aZZ whom it may concern: In the drawings, A designates the valve- Beit known that I, ALFRED DLnNoY, a seat; 13, the packing of the valve; 0,the citizen of the United States, residing at the valve; I, thevalvestem, and W the wall of city of New York, in the county of New Yorkthe pump-cylinder. The stem I of the valve 5 and State of New York, haveinvented a new is securely fastened in its place in the seat A anduseful Improvement in Valves, of which by means of a nut. The gumpackingB covthe following is a specification. ers the ports 0, so as toprevent the escape of My invention relates to that class of valves waterwhen the valve is closed. The valve 0, commonly known aser:it-valves,and which which is of metal, is made of such weight r0 are used for theexit of water from the cylinthat it will of itself close as soon as thepressder to the exit-pipe of a force-pump. ure caused by the motion ofthe piston is The nature of the invention consists in the slackencd andbefore the return-stroke of the details of construction and combinationsubpiston, so that no pounding can occur. To stantially as illustratedin the drawings, hereprevent wearing of the stem I on account of 15inafter described, and subsequently pointed any oblique motion of thevalve, I place a out in the claim. rubber bush (designated by I) aroundthe Figure l is a vertical axial sectional view stem I within the valve0. A metallic ring, of the exitvalve of a force-pump with my G, securedby bolts S, holds this bush in its improvement attached. Fig. 2 is aplan view place. A washer, V, secured upon the upper 20 of the same. endof the stem I by the nut R, limits the up- Heretofore it has been foundin large forceward motion of the valve, the whole mech- 7o pumps whichwere propelled by great power anism to be substantially as illustratedin the and which lifted large amounts of water that drawings. the actionof the cylinder and the consequent This valve, as before said, is to beused for 25 motion of the exit-valve produced a violent the exit-valveof a force-pump, and it has concussion of the valve upon its seatwhenbeen found that there is much less power re ever the valve closed.This soon pounded quired to lift this valve than for any other out thepacking of the valve, so thatin ashort heretofore in use. It has alsobeen found time it became comparatively worthless. To that any uneven oroblique motion of the valve 0 remedy this the stem of the valve wasprodoes not abrade the stem, for the elasticity of i longed upward, anda helical spring fastened the gum bush 1? quickly corrects such unevcnonthe top of the stem and resting upon the ness of motion, and alsoprevents any part of top of the valve was so arranged that when themetal of the valve from coming into conthe piston came to its shortpause in turning tact with the stem. By reason of these two 35 from oneway to the other in its reciprocatadvantages the expense of running a.pump ing motion the spring would close the valve provided with myimproved valve has by exupon its seat before the return motion of theperiment been found to be very much less than piston could act toproduce a pound; but it that required for a pump provided with any wasfound that therewas a greatloss of power, other valves new in use.

40 which was expended in lifting the valve, and What I claim as myinvention, and desire to that on account of the uneven adhesion of thesecure by Letters Patent, is valve to its seat and the consequentoblique The combination, with the wall W of a motion of the valve inrising the stem, which forcepump, the valve-seat A secured therein, wasof softer material than the valve,was soon and the valve-stem I, securedin said seat, as

45 so worn away that it was practically worthspecified, of the gumpacking B, interposed less and had to be taken out and a new stembetween the said seat A and the valve 6, the 9 5 inserted. This causedagreat expense of time valve 0, working upon said stem 1 and said andtrouble. It is to remedy these defects seat A, and carrying the saidpacking B, the that my invention has been devised. gum bush P withinsaid valve G and around said stem I, the ring G, holding said bush in Iplace in said valve, the screws S, securing said ring G in properposition the washer and T the nut R, holding said washer upon the saidALFRED D LANDS 5 valve-stem I, to limit the upward motion of Witnesses:

said Valve, all substantially as and for the In witness whereof Ihereunto set my hand in presence of two witnesses.

FREDK. W. RUBREN, purpose set forth. 0. E. MCDONALD.

